Math
posted by Tim .
PAULA ,SIMON AND RANDY COLLECTED INSECTS FOR THEIR SCIENCE PROJECT. AT THE END OF THE FIRST WEEK PAULA AND RANDY TOGETHER HAD 89 INSECTS, RANDY AND SIMON TOGETHER HAD 85 INSECTS. HOW MANY DID EACH HAVE ALONE?

Math 
drwls
P + R = 89
R + S = 85
You need a third equation to solve for all three unknowns. Is that the only information you were given? 
Math 
Tim
RANDY AND SIMON TOGETHER HAD 80

Math 
drwls
That disagrees with you previous statement "RANDY AND SIMON TOGETHER HAD 85"
When you finally get three independent statements stated as equations, then use algebra to solve them.
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